There is no wrong season to replace windows — installation works year-round, including Idaho winters. If you're optimizing, winter offers the lowest demand, shortest scheduling waits, and the best promotions, while ordering by early fall gets new windows in before the cold arrives. But the honest answer is simpler: the best time is when your windows need it.
Season by Season in the Treasure Valley
Winter (December–February). The slow season, which works in your favor: fastest scheduling, most aggressive manufacturer promotions, and you feel the comfort improvement immediately. Installers replace one window at a time, so your house is never open to the cold for more than minutes per room. Winter installs are routine for our crews, not a compromise.
Spring (March–May). Mild weather and moderate demand. A good window if you want the work done before summer heat — but book early, because everyone else has the same idea after the first warm weekend.
Summer (June–August). Peak season. Long days and easy conditions, but the longest waits and the least pricing flexibility. If you're set on summer, order in spring.
Fall (September–November). The strategic play. Factor in the 3-to-8-week manufacturing lead time and a September measure typically means installation by November — sealed up before the first real cold snap, ahead of the winter heating bills.
The Season Matters Less Than the Windows Do
A failed window doesn't care what month it is. Fogged glass between panes, sashes that won't stay up, drafts you can feel from the couch, or water staining around the frame are problems that compound: every month of waiting costs comfort and energy dollars, and water intrusion quietly rots framing and drywall — repairs that dwarf the cost of the window itself. Waiting for a "better season" on a failing window is a false economy.
Wood Windows Inc has installed through 45 Treasure Valley winters with our own in-house crews — never subcontractors — so whatever month you call, the work gets done right. Call (208) 376-2200 for a free in-home measure, any season.
Frequently Asked Questions
Is it too cold to install windows in winter?
No. Crews replace one window at a time, so each room is exposed for less than an hour, and modern sealants and foams are rated for cold-weather application. Idaho installers work straight through January.
How far ahead should I order new windows?
Plan on 3 to 8 weeks of manufacturing lead time before installation can even start. If you want new windows in before winter, get measured by early fall — September orders typically install by November.
Do window prices drop in the off-season?
Often, yes. Winter is the slowest season for window companies, so manufacturer promotions and scheduling flexibility tend to peak between November and February. You'll rarely see those incentives in June.
Sources & Testing Data
Last reviewed 2026-07-05 by Wood Windows Inc — (208) 376-2200